To cite package ‘treebase’ in publications use:

  Boettiger C, Temple Lang D (2025). _treebase: Discovery, Access and
  Manipulation of 'TreeBASE' Phylogenies_. R package version 0.1.5,
  <https://github.com/ropensci/treebase>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {treebase: Discovery, Access and Manipulation of 'TreeBASE' Phylogenies},
    author = {Carl Boettiger and Duncan {Temple Lang}},
    year = {2025},
    note = {R package version 0.1.5},
    url = {https://github.com/ropensci/treebase},
  }